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Tissues 6

Nervous

QuestionAnswer
What is the basic functional unit of the nervous system and what does it do? neurons (nerve cells) - specialized to conduct impulses
What is a nerve cell made up of? nerve cell body (soma), dendrites (short & numerous), the axon (long & few-normally the longest extension on the cell body), the myelin sheath, Bouton or synaptic knob (ending of the axon)
What is the purpose of the dendrite? It receives signals from the environment and brings it to the axon (think "dend" is "Doesn't sEND")
What is the purpose of the axon? The axon "acts on" a signal by sending an impulse; the impulse received by the dendrite travels the length of the axon, from the hillock to the terminal. There it is converted to a chemical message to be sent to the next neuron.
What are processes? The nerve fibers of the cell: the dendrites and axon
What are Nissl bodies? A type of rough endoplasmic reticulum (RER) found in the neuron cell body; involved in protein synthesis
What is the significance of nerves in muscles? Without nerves, there is no life in a muscle
What is a ganglion? A group or collection of nerve cell bodies; one or more axons joined to a dendrite
Created by: debmurph